- Basically simulate a device release with the previous tool and a
device press with the new tool to correctly terminate the previous
action.
- Hide the eraser when switching to another tool.
It's icon is temporary.
Behavior implemented:
1. Can interact with all items without showing items frames (but ToolBar shows).
2. Cannot move items, but can drag images.
3. Selected items appears deselected when Play tool chosen.
4. Play tool don't requires selecting of item before interacts.
5. Cursor looks like tool icon in text and image widgets (should be the same in any others widgets, but now in w3c is not).